JP3524701B2 - Labor progress detector - Google Patents
Labor progress detectorInfo
- Publication number
- JP3524701B2 JP3524701B2 JP29767596A JP29767596A JP3524701B2 JP 3524701 B2 JP3524701 B2 JP 3524701B2 JP 29767596 A JP29767596 A JP 29767596A JP 29767596 A JP29767596 A JP 29767596A JP 3524701 B2 JP3524701 B2 JP 3524701B2
- Authority
- JP
- Japan
- Prior art keywords
- fetus
- epidermis
- detection body
- delivery
- vagina
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Surgical Instruments (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、医療用機器として
分娩過程にある胎児の分娩進行度合いを検出する分娩進
度検出器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a delivery progress detector as a medical device for detecting the degree of delivery progress of a fetus in the course of delivery.
【０００２】[0002]
【従来の技術】産科医療の分野においては、産婦に不必
要な負担を与えることなく、分娩過程にある胎児の分娩
進行状態を自動的に監視して、医師及び看護婦の労作を
軽減することが望まれている。従来、このような要望に
答える装置としては、例えば特開平７−５１２８９号公
報に開示されるように、磁気力を含有する位置検出用素
子を膣内円蓋部に挿入配置して、胎児の分娩下降に伴い
該素子が押し下されるようにする一方、産道開口部付近
に磁気センサを有する測定体を固定しておき、該測定体
（具体的には磁気センサ）で素子の位置を測定すること
により、胎児の娩出の状態を検知して分娩進行度合いを
予知し、所定の分娩進行度合いで警報を出すようにした
ものが知られている。2. Description of the Related Art In the field of obstetrics and medical care, the labor progress of a fetus in the course of labor is automatically monitored without imposing an unnecessary burden on the mother and the labor of doctors and nurses is reduced. Is desired. Conventionally, as a device for responding to such a demand, as disclosed in, for example, Japanese Patent Application Laid-Open No. 7-51289, a position detecting element containing a magnetic force is inserted and arranged in an intravaginal fornix to detect a fetus. While the element is pushed down as the birth goes down, a measurement object with a magnetic sensor is fixed near the birth canal opening, and the position of the element is measured with the measurement object (specifically, a magnetic sensor). By doing so, it is known that the state of delivery of the fetus is detected to predict the degree of labor advancement, and an alarm is issued at a predetermined degree of labor advancement.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記従来の
ものでは、分娩進行度合いの検出に先立って、膣内に挿
入配置された位置検出用素子と産道開口部付近に固定さ
れた測定体との間の検出開始時の距離に応じて初期設定
を精度良く行う必要があり、その操作が面倒なものにな
る。また、監視中、産婦はその産道開口部付近に測定体
を付けた状態のままであり、産婦に不快感を与える虞が
ある。特に、測定体と警報を出す警報出力部とを電線で
接続すればその虞は大きい。However, in the above-mentioned conventional apparatus, the position detecting element inserted into the vagina and the measuring body fixed near the birth canal opening are detected prior to detecting the degree of labor progress. It is necessary to perform the initial setting with high accuracy according to the distance at the time of starting the detection, which makes the operation troublesome. Further, during the monitoring, the mother is still in a state where the measuring body is attached near the opening of the birth canal, which may cause discomfort to the mother. In particular, if the measuring object and the alarm output section for issuing an alarm are connected by an electric wire, there is a great risk.
【０００４】本発明はかかる点に鑑みてなされたもので
あり、その目的とするところは、従来の位置検出用素子
と測定体とを一体化したものを産婦の膣内にのみ挿入配
置して、初期設定の操作が容易で産婦に不快感を与える
ことなく、分娩過程における胎児の分娩進行度合いを検
出できる分娩進度検知器を提供するものである。The present invention has been made in view of the above points, and an object thereof is to insert and arrange a conventional position detecting element and a measuring body only in the vagina of a pregnant woman. The present invention provides a delivery progress detector capable of detecting the degree of delivery progress of a fetus during the delivery process without causing any discomfort to the delivery mother, because the initial setting operation is easy.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、請求項１に係る発明は、産婦の膣内に挿入され、分
娩過程にある胎児の分娩進行度合いを検出する分娩進度
検出器として、軟質物で構成され、外周面が膣壁面に滑
り止め状態で当接しかつ胎児の分娩下降に伴って軸方向
に圧縮変形が生じる伸縮部と圧縮変形が殆ど生じない挿
入保持部とからなる検出体と、該検出体の伸縮部に設け
られた位置検出用素子と、上記検出体の挿入保持部に設
けられ、上記素子の位置を継続的に検出することで胎児
の分娩下降に伴う上記伸縮部の圧縮変形量を測定する圧
縮変形量測定手段と、上記検出体の挿入保持部に設けら
れ、上記測定手段の測定結果に基づいて胎児の分娩進行
度合いを示す信号をアンテナから送信する信号送信手段
とを備える構成とする。In order to achieve the above object, the invention according to claim 1 is a delivery progress detector which is inserted into the vagina of a mother and detects the progress of delivery of a fetus in the course of delivery. A detector that is made of a soft material, and has an outer peripheral surface that abuts the vaginal wall in a non-slip state and that has an expandable portion that undergoes compressive deformation in the axial direction as the fetus descends and an insert holding portion that causes little compressive deformation. And a position detecting element provided in the expansion / contraction part of the detection body and the insertion / holding part of the detection body, and by continuously detecting the position of the element, the expansion / contraction part accompanying the descending birth of the fetus. And a signal transmitting unit that is provided in the insertion holding unit of the detection body and that transmits a signal indicating the degree of delivery progress of the fetus from the antenna based on the measurement result of the measuring unit. And a configuration including .
【０００６】これにより、産婦の膣内に分娩進度検出器
の検出体を所定状態に挿入配置した後分娩が開始される
と、検出体の伸縮部が胎児の分娩下降に伴って軸方向に
圧縮変形を生じ、該伸縮部と検出体の圧縮変形の殆ど生
じない挿入保持部との間に相対変位が生じる。この相対
変位量ないし伸縮部の圧縮変形量は、挿入保持部側の測
定手段が伸縮部側の位置検出用素子の位置を継続的に検
出することで測定でき、その測定結果に基づいて挿入保
持部側の信号送信手段が胎児の分娩進行度合いを示す信
号をアンテナから送信する。そして、この信号は看護婦
詰め所等に設置された受信機で受信され、所定の分娩進
行度合いで警報が出されることになる。As a result, when delivery is started after the detector of the labor advancement detector is inserted and arranged in a predetermined state in the vagina of the mother, the expandable portion of the detector is axially compressed as the fetus descends. A deformation occurs, and a relative displacement occurs between the expansion / contraction portion and the insertion holding portion in which the compression deformation of the detection body hardly occurs. This relative displacement amount or the amount of compressive deformation of the expansion / contraction part can be measured by continuously detecting the position of the position detection element on the expansion / contraction part side by the measuring means on the insertion / retention part side, and the insertion / retention based on the measurement result. The signal transmission means on the part side transmits a signal indicating the degree of delivery progress of the fetus from the antenna. Then, this signal is received by the receiver installed at the nurse's station or the like, and an alarm is issued at a predetermined degree of delivery progress.
【０００７】このような分娩進度検出器においては、一
つの検出体に位置検出用素子と従来の測定体に相当する
測定手段及び信号送信手段とが設けられているため、検
出体を膣内に所定通りに挿入配置さえすれば素子と測定
手段との間の検出開始時の距離に応じて面倒な初期設定
を行う必要はなく、その操作性が容易なものになる。ま
た、検出中は単に膣内に一つの検出体を挿入しているだ
けで、従来の如く産道開口部付近に別のものを付けるこ
とはないので、産婦に不快感や負担をかけることが少な
くなる。[0007] In such a labor progress detector, since one detecting body is provided with the position detecting element and the measuring means and signal transmitting means corresponding to the conventional measuring body, the detecting body is placed in the vagina. As long as it is inserted and arranged in a predetermined manner, it is not necessary to perform troublesome initial setting according to the distance between the element and the measuring means at the time of starting the detection, and the operability thereof becomes easy. In addition, since only one detector is inserted into the vagina during detection, there is no need to attach another one near the opening of the birth canal as in the past, so there is less discomfort or burden on the mother. Become.
【０００８】請求項２に係る発明は、請求項１記載の分
娩進度検出器において、上記検出体を、中空の袋状に形
成された軟質物からなる表皮と、該表皮内に配置された
スポンジゴムとで構成して、膣内挿入前に表皮内を真空
にすると表皮の外径が収縮し、膣内挿入後に表皮内を大
気圧に開放するとスポンジゴムの復元力により表皮が元
の形状に戻るようにする。これにより、産婦に負担をか
けることなく検出体を膣内に所定通りに容易にかつ確実
に挿入できることになる。According to a second aspect of the present invention, in the labor progress detector according to the first aspect, the detector is an epidermis made of a soft material formed in the shape of a hollow bag, and a sponge disposed in the epidermis. Consists of rubber and the outer diameter of the epidermis contracts when the inside of the epidermis is evacuated before insertion into the vagina, and when the inside of the epidermis is opened to atmospheric pressure after insertion into the vagina, the epidermis returns to its original shape due to the restoring force of the sponge rubber. Try to return. As a result, the detection body can be easily and surely inserted into the vagina in a predetermined manner without burdening the mother.
【０００９】請求項３に係る発明は、請求項２記載の分
娩進度検出器において、上記表皮の外周面に複数の突起
部を、中心部に軸方向に沿って延びる体液通過孔をそれ
ぞれ形成するとともに、表皮の子宮側端面を胎児の頭部
に対応して皿状の凹面に形成する。これにより、表皮の
突起部によって膣壁面に対する滑り止め効果を高めて検
出体が挿入位置からずれ落ちるのを確実に防止できると
ともに、中心部の体液通過孔から羊水や体液を排出する
ことができる。また、胎児の分娩開始時胎児の頭部がそ
れに対応した検出体表皮の凹面に面接触するので、胎児
に負担をかけることなく、胎児の分娩進行度合いに応じ
て検出体の伸縮部に圧縮変形が確実に生じるようにな
り、分娩進行度合いの検出を確実に行うことができる。According to a third aspect of the present invention, in the delivery progress detector according to the second aspect, a plurality of protrusions are formed on the outer peripheral surface of the epidermis, and a body fluid passage hole extending along the axial direction is formed at the center. At the same time, the end surface of the epidermis on the uterus side is formed into a dish-shaped concave surface corresponding to the head of the fetus. Thus, the protrusion of the epidermis enhances the anti-slip effect on the wall surface of the vagina, and the detector can be reliably prevented from slipping off the insertion position, and amniotic fluid or body fluid can be discharged from the body fluid passage hole in the central portion. In addition, since the head of the fetus comes into surface contact with the corresponding concave surface of the epidermis at the start of delivery of the fetus, the deformable portion of the detector is compressed and deformed according to the progress of delivery of the fetus without burdening the fetus. Is reliably generated, and the degree of labor advancement can be reliably detected.
【００１０】請求項４に係る発明は、請求項１記載の分
娩進度検出器において、上記位置検出用素子を伸縮部の
軸方向に沿って延びる金属部材で構成するとともに、上
記圧縮変形量測定手段を、コイルを有する発振回路で構
成する。そして、該発振回路のコイルを、その軸線上で
上記素子とラップ可能でかつ該ラップ量が上記検出体の
伸縮部の圧縮変形に伴って変化するように配置する。こ
れにより、上記ラップ量が伸縮部の圧縮変形に伴って変
化するとコイルのインダクタンスが変化し、発振回路の
発振周波数が変化することから、発振回路において素子
の位置検出ひいては分娩進行度合いの検出が確実に行わ
れる。その上、金属部材とコイルとをラップさせる配置
によって検出体がその分小型化することになる。According to a fourth aspect of the present invention, in the delivery progress detector according to the first aspect, the position detecting element is composed of a metal member extending along the axial direction of the expandable portion, and the compression deformation amount measuring means. Is composed of an oscillation circuit having a coil. The coil of the oscillating circuit is arranged so that it can be wrapped with the element on its axis and the wrap amount changes with the compressive deformation of the expandable portion of the detection body. As a result, when the lap amount changes with the compressive deformation of the expansion / contraction portion, the inductance of the coil changes and the oscillation frequency of the oscillation circuit changes, so it is possible to reliably detect the position of the element in the oscillation circuit and thus the degree of delivery progress. To be done. Moreover, the arrangement in which the metal member and the coil are overlapped with each other reduces the size of the detection body.
【００１１】請求項５に係る発明は、請求項１記載の分
娩進度検出器において、上記アンテナを金属線で構成
し、該金属線の両端を、検出体の挿入保持部端面の軸心
を挟んだ二箇所にそれぞれ接続する構成とする。これに
より、膣内から検出体を引き出す際上記金属線からなる
アンテナを引き出し紐として使用することができる。According to a fifth aspect of the present invention, in the delivery progress detector according to the first aspect, the antenna is composed of a metal wire, and both ends of the metal wire sandwich the axis of the end face of the insertion holding portion of the detector. It will be connected to each of the two locations. Thereby, when the detection body is pulled out from the vagina, the antenna made of the metal wire can be used as a pulling string.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【００１３】図１及び図２は本発明の一実施形態に係る
分娩進度検出器Ａを示す。該分娩進度検出器Ａは、図３
に示すように、陣痛の開始後に産婦の膣１内に挿入さ
れ、子宮２内の胎児３が子宮口４の拡大に伴って分娩さ
れる過程における胎児３の分娩進行度合いを検出するも
のである。1 and 2 show a labor progress detector A according to an embodiment of the present invention. The delivery progress detector A is shown in FIG.
As shown in (1), the degree of delivery progress of the fetus 3 is detected during the process in which the fetus 3 is inserted into the vagina 1 of the mother after the labor begins and the fetus 3 in the uterus 2 is delivered with the expansion of the uterine ostium 4. .
【００１４】上記分娩進度検出器Ａは検出器本体を構成
する略円柱形状の検出体１１を備え、該検出体１１は、
中空の袋状に形成された天然ゴムやシリコンゴム等生体
適合性に優れた軟質物からなる表皮１２と、該表皮１２
内に配置された軟質ポリウレタン発泡体等のスポンジゴ
ム１３とを有している。上記表皮１２の外径は、外周面
が膣１壁面に密着して滑り止め状態で当接するように膣
１内径（約７０ｍｍ）と同一又はそれよりも大きい値
（７０〜８０ｍｍ程度）に設定されているとともに、外
周面の図右側部分つまり子宮側部分には袋状の突起部１
４が軸方向に５列で各列の円周方向に１８個ずつ合計９
０個形成されており、上記スポンジゴム１３は該各突起
部１４内にまで充填されている。また表皮１２の子宮側
端面１２ａは、胎児３の頭部に対応して皿状の凹面に形
成されているとともに、該端面１２ａの中央部には検出
体１１の軸方向内側に向かって延びる筒状部１２ｂが一
体成形されており、該筒状部１２ｂの外周面（表皮１２
の中空袋内に臨む面）には位置検出用素子として円筒状
の金属部材である金属パイプ１５が嵌着されている。The delivery progress detector A is provided with a substantially cylindrical detector 11 which constitutes the detector body.
A skin 12 made of a soft material having excellent biocompatibility such as a natural rubber or silicone rubber formed in a hollow bag shape, and the skin 12
It has a sponge rubber 13 such as a soft polyurethane foam disposed inside. The outer diameter of the epidermis 12 is set to be equal to or larger than the inner diameter of the vagina 1 (about 70 mm) (about 70 to 80 mm) so that the outer peripheral surface closely contacts the wall surface of the vagina 1 and abuts in a non-slip state. In addition, a bag-shaped protrusion 1 is provided on the right side of the outer peripheral surface in the figure, that is, on the uterine side.
4 in 5 rows in the axial direction and 18 in each row in the circumferential direction for a total of 9
The number of the sponge rubbers 13 is 0, and the sponge rubbers 13 are filled even in the protrusions 14. The uterine side end surface 12a of the epidermis 12 is formed as a dish-shaped concave surface corresponding to the head of the fetus 3, and a tube extending inward in the axial direction of the detection body 11 is formed at the center of the end surface 12a. The cylindrical portion 12b is integrally molded, and the outer peripheral surface (skin 12
A metal pipe 15, which is a cylindrical metal member, is fitted as a position detecting element on the surface (facing the inside of the hollow bag).
【００１５】上記表皮１２の外周面の図左側縁部は、表
皮１２と協働して中空の袋を形成するポリウレタン等の
樹脂からなる保持パイプ１６のフランジ部１６ａの外周
縁に凹凸嵌合によりシ−ル状態で接合されている。上記
保持パイプ１６は、上記表皮１２の筒状部１２ｂの外周
に一部ラップするように検出体１１の軸方向内側に向か
って延びており、その先端部の内面には内径が次第に小
さくなるテーパー面１６ｂが形成されている。そして、
該テーパー面１６ｂの位置において上記表皮１２の筒状
部１２ｂ内に、外周にテーパー面を有する樹脂製のシー
ル部保持リング１７を挿入して筒状部１２ｂの径を拡げ
ることにより該筒状部１２ｂがテーパー面１６ｂに密着
してシール性の確保及び両者間の抜け止めが行われるよ
うになっている。筒状部１２ｂと保持パイプ１６とは、
検出体１１ないし表皮１２の中心部を軸方向に貫通して
延びる体液通過孔１８を構成しており、その孔径は１０
〜２０ｍｍ程度に設定されている。また、検出体１１が
膣１内に所定通りに挿入されているとき、つまり表皮１
２の外周面が膣１壁面に滑り止め状態で当接していると
きに胎児３の分娩下降に伴って表皮１２の子宮側端面１
２ａから軸方向に押圧力が作用すると、検出体１１の子
宮側部分である伸縮部１１ａでは圧縮変形が生じ易く、
反子宮側部分である挿入保持部１１ｂでは圧縮変形が殆
ど生じないようになっており、伸縮部１１ａの圧縮変形
は最大３０ｍｍ生じるようになっている。上記伸縮部１
１ａの圧縮変形時には表皮１２の筒状部１２ｂ及び金属
パイプ１５が保持パイプ１６内をそれとラップする方向
に移動する。The left side edge portion of the outer peripheral surface of the outer skin 12 in the figure is formed by concavo-convex fitting on the outer peripheral edge of the flange portion 16a of the holding pipe 16 made of a resin such as polyurethane which cooperates with the outer skin 12 to form a hollow bag. They are joined in a sealed state. The holding pipe 16 extends inward in the axial direction of the detection body 11 so as to partially wrap around the outer circumference of the tubular portion 12b of the outer skin 12, and the inner surface of the tip portion thereof has a tapered inner diameter. The surface 16b is formed. And
At the position of the tapered surface 16b, a resin sealing portion holding ring 17 having a tapered surface on the outer periphery is inserted into the tubular portion 12b of the outer skin 12 to expand the diameter of the tubular portion 12b. The taper surface 12b is in close contact with the taper surface 16b so as to ensure the sealing property and prevent slippage between the two. The tubular portion 12b and the holding pipe 16 are
A body fluid passage hole 18 extending axially through the center of the detection body 11 or the epidermis 12 is formed, and the hole diameter is 10
It is set to about 20 mm. Moreover, when the detection body 11 is inserted into the vagina 1 in a predetermined manner, that is, the epidermis 1
When the outer peripheral surface 2 of the fetus 3 comes into contact with the wall surface of the vagina 1 in a non-slip state, the uterine side end surface 1 of the epidermis 12 is accompanied by the descending birth of the fetus 3.
When a pressing force acts from 2a in the axial direction, compressive deformation is likely to occur in the expandable portion 11a which is the uterine side portion of the detection body 11,
The insertion-retaining portion 11b, which is the side opposite to the uterus, hardly causes compressive deformation, and the expandable portion 11a has a maximum compressive deformation of 30 mm. The elastic part 1
At the time of compressive deformation of 1a, the tubular portion 12b of the skin 12 and the metal pipe 15 move in the holding pipe 16 in a direction to wrap with the holding pipe 16.
【００１６】上記金属パイプ１５は検出体１１の伸縮部
１１ａに配置されている一方、検出体１１の挿入保持部
１１ｂに位置する保持パイプ１６の外周には後述する発
振回路２３のコイル２７が巻き付けられており、該コイ
ル２７は、その軸線上で金属パイプ１５とラップ可能で
かつ該ラップ量が検出体１１の伸縮部１１ａの圧縮変形
に伴って変化するように配置されている。また、上記保
持パイプ１６の外周には発振回路２３等を有する電子回
路２１が樹脂コーティングにより液密性を確保して設け
られている。該電子回路２１の送信用アンテナ２２は一
本の金属線からなり、その両端は、検出体１１の挿入保
持部１１ｂ端面である保持パイプ１６のフランジ部１６
ａにおける体液通過孔１８（つまり検出体１１の軸心）
を挟んだ二箇所にそれぞれ接続されている。さらに、上
記保持パイプ１６のフランジ部１６ａ及び電子回路２１
の樹脂コーティング部を貫通して表皮１２内を真空にし
たり大気圧に開放したりするためのストップバルブ１９
付の樹脂製チューブ２０が設けられている。The metal pipe 15 is arranged in the expansion / contraction portion 11a of the detection body 11, while the coil 27 of the oscillation circuit 23, which will be described later, is wound around the outer circumference of the holding pipe 16 located in the insertion holding portion 11b of the detection body 11. The coil 27 is arranged so that it can be wrapped with the metal pipe 15 on its axis and that the amount of wrap changes with the compressive deformation of the expandable portion 11a of the detection body 11. An electronic circuit 21 having an oscillating circuit 23 and the like is provided on the outer periphery of the holding pipe 16 by resin coating so as to ensure liquid tightness. The transmitting antenna 22 of the electronic circuit 21 is made of a single metal wire, and both ends thereof are flange portions 16 of the holding pipe 16 which are end faces of the insertion holding portion 11b of the detection body 11.
Body fluid passage hole 18 in (a) (that is, the axial center of the detection body 11)
It is connected to each of the two places sandwiching. Further, the flange portion 16a of the holding pipe 16 and the electronic circuit 21
Stop valve 19 for evacuating the inside of the skin 12 and opening it to atmospheric pressure by penetrating the resin coating part of
An attached resin tube 20 is provided.
【００１７】上記電子回路２１は、図４に示すように、
胎児３の分娩下降に伴う検出体伸縮部１１ａの圧縮変形
量を測定する圧縮変形量測定手段としての発振回路２３
と、該発振回路２３からの出力信号を増幅器２４を介し
て受け、胎児の分娩進行度合いを示す送信信号に変換し
てアンテナ２２から送信する信号送信手段としての無線
送信器２５とを有する。上記発振回路２３は、増幅器２
６の出力の一部を入力側に戻す帰還回路にコイル２７と
コンデンサ２８とを並列に配置してなる正弦波発振回路
であり、その発振周波数ｆ0は、
ｆ0＝１／｛２π√（Ｌ・Ｃ）｝
である。但し、Ｌはコイル２７の自己インダクタンス、
Ｃはコンデンサ２８の静電容量である。ここで、コイル
２７の自己インダクタンスは、コイル２７と金属パイプ
１５とのラップ量に対し正比例する特性を有する。従っ
て、発振回路２３の発振周波数ｆ0は、胎児３の分娩下
降に伴い検出体伸縮部１１ａの圧縮変形量が増加して上
記ラップ量が増加するに連れて低くなる。尚、図４中、
２９は電池である。The electronic circuit 21 is, as shown in FIG.
Oscillation circuit 23 as a compression deformation amount measuring means for measuring the compression deformation amount of the detector expansion-contraction part 11a as the fetus 3 goes down.
And a radio transmitter 25 as a signal transmitting means for receiving an output signal from the oscillation circuit 23 through an amplifier 24, converting the signal into a transmission signal indicating the degree of progress of delivery of the fetus and transmitting the signal from the antenna 22. The oscillation circuit 23 includes an amplifier 2
6 is a sine wave oscillation circuit in which a coil 27 and a capacitor 28 are arranged in parallel in a feedback circuit that returns a part of the output of 6 to the input side, and the oscillation frequency f0 is f0 = 1 / {2π√ (L · C)}. However, L is the self-inductance of the coil 27,
C is the capacitance of the capacitor 28. Here, the self-inductance of the coil 27 has a characteristic that is directly proportional to the amount of overlap between the coil 27 and the metal pipe 15. Therefore, the oscillating frequency f0 of the oscillating circuit 23 becomes lower as the amount of compressive deformation of the detector expanding / contracting portion 11a increases as the fetus 3 goes down and the lap amount increases. In addition, in FIG.
29 is a battery.
【００１８】次に、上記分娩進度検出器Ａの作用及び効
果を、該検出器Ａを用いて分娩過程における胎児３の分
娩進行度合いを検出するときの手順に従って説明する。Next, the operation and effect of the labor advancement detector A will be described according to the procedure for detecting the degree of labor advancement of the fetus 3 in the delivery process using the detector A.
【００１９】陣痛が始まった産婦の膣１内に分娩進度検
出器Ａを挿入するときには、先ず、チューブ２０を真空
ポンプに接続して検出体１１（表皮１２）の内部を真空
にする。すると、検出体１１の表皮１２はスポンジゴム
１３と共に大気圧により圧縮され、検出体１１の外径は
元の約半分にまで小さくなる。その際、表皮１２は、そ
の外周面に多数の袋状の突起部１４を有しているため、
大気圧により圧縮され易くなっている。When inserting the labor advancement detector A into the vagina 1 of a woman who has started labor, first, the tube 20 is connected to a vacuum pump to evacuate the inside of the detector 11 (skin 12). Then, the skin 12 of the detection body 11 is compressed by the atmospheric pressure together with the sponge rubber 13, and the outer diameter of the detection body 11 is reduced to about half the original diameter. At that time, since the outer skin 12 has a large number of bag-shaped protrusions 14 on its outer peripheral surface,
It is easily compressed by atmospheric pressure.
【００２０】そして、上記チューブ２０のストップバル
ブ１９を閉じて真空ポンプとの接続を外した後、小さく
潰れた検出体１１を産婦の膣１内に挿入する。その際、
検出体１１の外径は膣１内径よりもかなり小さくなって
いるので、産婦に苦痛や負担をかけることはない。Then, after closing the stop valve 19 of the tube 20 and disconnecting it from the vacuum pump, the small crushed detecting body 11 is inserted into the vagina 1 of the obstetrician. that time,
Since the outer diameter of the detection body 11 is considerably smaller than the inner diameter of the vagina 1, it does not cause pain or burden on the mother.
【００２１】挿入完了後直ちにチューブ２０のストップ
バルブ１９を開けて検出体１１の内部を大気圧に開放す
る。すると、検出体１１内のスポンジゴム１３の復元力
によって表皮１２が元の形状に戻り、その外径は膣１内
径と同一又はそれより大きくなる。このため、表皮１２
の外周面が膣１内壁に密着して、分娩進度検出中に膣１
内から検出体１１が脱落するのを防止できる。特に、本
実施形態では、表皮１２の外周面に多数の袋状の突起部
１４が形成されているため、表皮１２の膣１内壁に対す
る密着性を高めて検出体１１の脱落をより確実に防止で
きる。また、表皮１２が元の形状に戻った状態では、金
属パイプ１５と発振回路２３のコイル２７とのラップ量
は設定通りになるので、従来の如き面倒な初期設定を行
う必要はなく、その操作が容易である。Immediately after the insertion is completed, the stop valve 19 of the tube 20 is opened to open the inside of the detection body 11 to the atmospheric pressure. Then, the skin 12 returns to its original shape due to the restoring force of the sponge rubber 13 in the detection body 11, and its outer diameter becomes the same as or larger than the inner diameter of the vagina 1. Therefore, the skin 12
The outer peripheral surface of the vagina is in close contact with the inner wall of the vagina 1, and the vagina 1
It is possible to prevent the detection body 11 from falling out of the inside. In particular, in the present embodiment, since a large number of bag-shaped protrusions 14 are formed on the outer peripheral surface of the epidermis 12, the adhesion of the epidermis 12 to the inner wall of the vagina 1 is enhanced to more reliably prevent the detection body 11 from falling off. it can. Further, when the skin 12 returns to its original shape, the amount of lap between the metal pipe 15 and the coil 27 of the oscillation circuit 23 is as set, so that it is not necessary to perform a complicated initial setting as in the conventional case, and the operation is performed. Is easy.
【００２２】このような状態で子宮２内から胎児３が頭
を下にして下降してくると胎児３の頭部が検出体１１の
伸縮部１１ａ端面（詳しくは表皮１２の子宮側端面１２
ａ）に当たり、胎児３の下降速度に応じて検出体１１の
伸縮部１１ａが圧縮される。その際、上記表皮１２の子
宮側端面１２ａは、胎児３の頭部に対応して皿状の凹面
に形成されているため、胎児３の頭部から押圧力が検出
体１１の伸縮部１１ａ端面全体に均一に作用することに
なり、胎児３に負担をかけないだけでなく、検出体１１
の伸縮部１１ａを円滑に圧縮させることができる。ま
た、胎児３の分娩に際しては子宮２から破水等の体液が
膣１を通して流出するが、その体液は、上記皿状の検出
体１１端面で受けてその中心部の体液通過孔１８を通し
て外部に円滑に排水されるため、この点からも検出体１
１の脱落を防止することができる。In this state, when the fetus 3 descends from the uterus 2 with its head down, the head of the fetus 3 is moved to the end face of the stretchable portion 11a of the detection body 11 (specifically, the end face 12 on the uterus side of the epidermis 12).
In step a), the expandable portion 11a of the detection body 11 is compressed according to the descending speed of the fetus 3. At that time, since the uterine side end surface 12a of the epidermis 12 is formed into a dish-shaped concave surface corresponding to the head of the fetus 3, the pressing force from the head of the fetus 3 is the end surface of the expandable portion 11a of the detection body 11. Since it acts uniformly on the whole body, not only does the fetus 3 not be burdened, but also the detector 11
The elastic portion 11a can be smoothly compressed. In addition, when the fetus 3 is delivered, body fluid such as water rupture flows out from the uterus 2 through the vagina 1, and the body fluid is received by the end face of the dish-shaped detection body 11 and smoothly passed through the body fluid passage hole 18 at the center thereof to the outside. Since it is drained to the
1 can be prevented from falling off.
【００２３】そして、上記検出体１１の伸縮部１１ａが
圧縮されると該伸縮部１１ａ側の金属パイプ１５が検出
体１１の挿入保持部１１ｂ側に移動して該金属パイプ１
５と発振回路２３のコイル２７とのラップ量が増加す
る。すると、上記コイル２７の自己インダクタンスが増
加して発振回路２３の発振周波数が低くなり、この発振
周波数の変化に応じて無線送信器２５が分娩の進行度合
いを示す信号をアンテナ２２から電波として送信する。
この電波は看護婦控え室等に設置された受信機に受信さ
れ、該受信機は信号処理をして分娩の進行度合いを光、
音、文字あるいはこれらの組み合わせよって示す。これ
により、医師及び看護婦は、分娩の進行度合いを把握す
ることができ、必要な時点で産婦のもとに駆けつけるこ
とができる。また、進行度合いの測定中、産婦は単に膣
１内に一つの検出体１１を挿入しているだけであるの
で、それ程負担を感じることはなく、また必要な時には
必ず医師等が駆けつけてくれるという安心感を得ること
ができる。When the expansion / contraction part 11a of the detection body 11 is compressed, the metal pipe 15 on the expansion / contraction part 11a side moves to the insertion holding part 11b side of the detection body 11 and the metal pipe 1
5 and the wrap amount of the coil 27 of the oscillation circuit 23 increase. Then, the self-inductance of the coil 27 increases and the oscillating frequency of the oscillating circuit 23 decreases, and the wireless transmitter 25 transmits a signal indicating the degree of progress of delivery as a radio wave from the antenna 22 according to the change of the oscillating frequency. .
This radio wave is received by a receiver installed in a nurse's waiting room, etc., and the receiver performs signal processing to detect the progress of delivery,
It is indicated by sound, letters, or a combination thereof. As a result, the doctor and the nurse can grasp the degree of progress of labor and can rush to the mother at a necessary time. Also, during the measurement of the degree of progress, the maternal only inserts one detection body 11 into the vagina 1, so it does not feel that much burden, and a doctor etc. will come to it whenever necessary. You can get a sense of security.
【００２４】そして、医師は触診により分娩の進行度合
いを最終的に確認し、必要ならばアンテナ２２を引き出
し紐代わりに用いて検出体１１を膣１内から引き出す。
尚、検出体１１は１回の分娩にのみ使用し使い捨てとす
るものである。Then, the doctor finally confirms the progress of labor by palpation, and if necessary, the antenna 22 is used as a drawstring to pull out the detection body 11 from the vagina 1.
The detector 11 is used only for one delivery and is disposable.
【００２５】尚、上記実施形態では、位置検出用素子と
して金属パイプ１５を使用し、該素子の位置を継続的に
検出することで胎児３の分娩降下に伴う検出体伸縮部１
１ａの圧縮変形量を測定する圧縮変形量測定手段として
発振回路２３を使用したが、本発明は、変位を測定する
従来公知の手段、例えば磁気力を有する素子と磁気セン
サとの組み合わせにより検出体伸縮部１１ａの圧縮変形
量を測定するように構成してもよい。In the above embodiment, the metal pipe 15 is used as the position detecting element, and the position of the element is continuously detected so that the fetus 3 expands / contracts when the fetus 3 is lowered.
The oscillation circuit 23 is used as the compression deformation amount measuring means for measuring the compression deformation amount of 1a, but the present invention uses a conventionally known means for measuring the displacement, for example, a combination of an element having a magnetic force and a magnetic sensor. You may comprise so that the compression deformation amount of the expansion-contraction part 11a may be measured.
【００２６】[0026]
【発明の効果】以上のように、本発明の分娩進度検出器
によれば、胎児の分娩下降に伴って検出体の伸縮部が軸
方向に圧縮変形を生じ、その変形量を伸縮部側の位置検
出用素子と検出体の挿入保持部側の測定手段とによって
測定して分娩進行度合いを検出するので、上記素子と測
定手段との間の検出開始時の距離に応じて初期設定を行
う必要はなく、その操作容易性を高めることができる。
また、検出中は単に膣内に一つの検出体を挿入している
だけであるので、産婦に不快感や負担をかけることが少
なくて済み、実用性に優れている。As described above, according to the labor advancement detector of the present invention, the expandable portion of the detection body is axially compressed and deformed as the fetus descends, and the amount of deformation of the expandable portion on the expandable portion side is reduced. Since the degree of delivery progress is detected by measuring with the position detecting element and the measuring means on the side of the insertion holding portion of the detection body, it is necessary to perform initial setting according to the distance between the element and the measuring means at the start of detection. However, the operability can be improved.
In addition, since only one detection body is inserted into the vagina during detection, it is possible to reduce the discomfort and burden on the mother, and it is excellent in practicality.
【００２７】特に、請求項２に係る発明では、検出体を
中空袋状の表皮と該表皮内に配置されたスポンジゴムと
で構成し、膣内挿入前に表皮内を真空にして表皮の外径
を収縮させる一方、膣内挿入後に表皮内を大気圧に開放
してスポンジゴムの復元力により表皮を元の形状に戻す
ことによって、産婦に負担をかけることなく検出体を膣
内に所定通りに容易にかつ確実に挿入することができる
という効果を併有する。In particular, in the invention according to claim 2, the detecting body is composed of a hollow bag-like epidermis and sponge rubber arranged in the epidermis, and the inside of the epidermis is evacuated before insertion into the vagina and outside the epidermis. While the diameter is contracted, the inside of the epidermis is opened to atmospheric pressure after insertion into the vagina, and the restoring force of the sponge rubber restores the epidermis to its original shape, so that the detection body can be placed in the vagina as prescribed without burdening the mother. It also has the effect that it can be easily and surely inserted.
【００２８】請求項３に係る発明では、表皮の突起部に
よって膣壁面に対する滑り止め効果を高めて検出体が挿
入位置からずれ落ちるのを確実に防止できるとともに、
中心部の体液通過孔から羊水や体液を排出することがで
きる。また、胎児の分娩開始時胎児の頭部が検出体表皮
の凹面に面接触するので、胎児に負担をかけることな
く、胎児の分娩進行度合いに応じて検出体の伸縮部に圧
縮変形が確実に生じるようになり、分娩進行度合いの検
出を確実に行うことができるという効果をも有する。According to the third aspect of the invention, the protrusion of the epidermis enhances the anti-slip effect on the wall surface of the vagina, and the detector can be reliably prevented from slipping off the insertion position.
Amniotic fluid and body fluid can be discharged from the body fluid passage hole in the center. In addition, since the head of the fetus comes into surface contact with the concave surface of the detection body epidermis at the start of delivery of the fetus, the compressive deformation of the expansion / contraction part of the detection body is surely performed according to the degree of delivery progress of the fetus without burdening the fetus. As a result, there is an effect that it is possible to reliably detect the degree of labor advancement.
【００２９】請求項４に係る発明では、測定手段を構成
する発振回路のコイルと位置検出用素子を構成する金属
部材とをラップ可能に配置しかつ該ラップ量が検出体の
伸縮部の圧縮変形に伴って変化するようにし、発振回路
の発振周波数から素子の位置を測定しているので、分娩
進行度合いの検出を確実に行いながら、検出体ないし検
出器の小型化を図ることができる。In the invention according to claim 4, the coil of the oscillation circuit which constitutes the measuring means and the metal member which constitutes the position detecting element are arranged so as to be able to wrap, and the wrap amount is the compression deformation of the expandable portion of the detection body. The position of the element is measured from the oscillation frequency of the oscillation circuit so that the detection body or detector can be downsized while surely detecting the degree of delivery progress.
【００３０】請求項５に係る発明では、信号送信用のア
ンテナが検出体を膣内から引き出すための紐の機能を有
しているので、その分部品点数を少なくしてコストの低
廉化等に寄与することができる。In the invention according to claim 5, since the signal transmitting antenna has a function of a string for pulling out the detection body from the inside of the vagina, the number of parts can be reduced correspondingly to reduce the cost. Can contribute.
【図１】本発明の実施形態に係る分娩進度検出器の縦断
側面図である。FIG. 1 is a vertical cross-sectional side view of a labor progress detector according to an embodiment of the present invention.
【図２】図１のＸ−Ｘ線における断面図である。FIG. 2 is a cross-sectional view taken along line XX of FIG.
【図３】上記分娩進度検出器を産婦の膣内に挿入した状
態を示す図である。FIG. 3 is a diagram showing a state in which the delivery progress detector is inserted into the vagina of a mother.
【図４】上記分娩進度検出器の電子回路図である。FIG. 4 is an electronic circuit diagram of the delivery progress detector.
Ａ 分娩進度検出器 １ 膣 ３ 胎児 １１ 検出体 １１ａ 伸縮部 １１ｂ 挿入保持部 １２ 表皮 １２ａ 子宮側端面 １３ スポンジゴム １４ 突起部 １５ 金属パイプ（位置検出用素子，金属部材） １８ 体液通過孔 ２２ アンテナ ２３ 発振回路（圧縮変形量測定手段） ２５ 無線送信器（信号送信手段） ２７ コイル A Delivery progress detector 1 vagina 3 fetus 11 detector 11a Elastic part 11b Insert holding part 12 epidermis 12a End surface of uterus 13 Sponge rubber 14 Projection 15 Metal pipe (element for position detection, metal member) 18 Body fluid passage hole 22 antenna 23 Oscillation circuit (compression deformation amount measuring means) 25 Radio transmitter (Signal transmission means) 27 coils
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭51−8791（ＪＰ，Ａ) 特開 昭48−57496（ＪＰ，Ａ) 特開 平７−275211（ＪＰ，Ａ) 特公 昭47−33640（ＪＰ，Ｂ１) 特公 昭44−18719（ＪＰ，Ｂ１) 実公 昭45−16797（ＪＰ，Ｙ１) 特許2596510（ＪＰ，Ｂ２) 特許2558609（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) A61B 5/11 A61B 5/00 101 A61B 5/107 A61B 10/00 A61B 17/42 ─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-51-8791 (JP, A) JP-A-48-57496 (JP, A) JP-A-7-275211 (JP, A) JP-B 47- 33640 (JP, B1) JP-B 44-18719 (JP, B1) JP-B 45-16797 (JP, Y1) Patent 2596510 (JP, B2) Patent 2558609 (JP, B2) (58) Fields investigated (Int .Cl. 7 , DB name) A61B 5/11 A61B 5/00 101 A61B 5/107 A61B 10/00 A61B 17/42
Claims (5)
胎児の分娩進行度合いを検出する分娩進度検出器であっ
て、 軟質物で構成され、外周面が膣壁面に滑り止め状態で当
接しかつ胎児の分娩下降に伴って軸方向に圧縮変形が生
じる伸縮部と圧縮変形が殆ど生じない挿入保持部とから
なる検出体と、 該検出体の伸縮部に設けられた位置検出用素子と、 上記検出体の挿入保持部に設けられ、上記素子の位置を
継続的に検出することで胎児の分娩下降に伴う上記伸縮
部の圧縮変形量を測定する圧縮変形量測定手段と、 上記検出体の挿入保持部に設けられ、上記測定手段の測
定結果に基づいて胎児の分娩進行度合いを示す信号をア
ンテナから送信する信号送信手段とを備えたことを特徴
とする分娩進度検出器。1. A delivery progress detector, which is inserted into the vagina of a mother and detects the degree of delivery progress of a fetus in the course of delivery, and is composed of a soft material, and the outer peripheral surface of which touches the vaginal wall in a non-slip state. A detection body that is in contact with the fetus and has an expansion / contraction portion that undergoes compressive deformation in the axial direction as the fetus descends; and an insertion holding portion that hardly causes compression deformation, and a position detection element provided in the expansion / contraction portion of the detection body. A compression deformation amount measuring means which is provided in the insertion holding part of the detection body, and which measures the compression deformation amount of the expansion and contraction part accompanying the descending birth of the fetus by continuously detecting the position of the element, and the detection body. And a signal transmission means for transmitting a signal indicating the degree of progress of delivery of the fetus from the antenna on the basis of the measurement result of the measurement means.
軟質物からなる表皮と、該表皮内に配置されたスポンジ
ゴムとを有し、膣内挿入前に表皮内を真空にすると表皮
の外径が収縮し、膣内挿入後に表皮内を大気圧に開放す
るとスポンジゴムの復元力により表皮が元の形状に戻る
ように構成されている請求項１記載の分娩進度検出器。2. The detector has an epidermis made of a soft material formed into a hollow bag shape and a sponge rubber arranged in the epidermis, and when the epidermis is evacuated before insertion into the vagina. 2. The delivery progress detector according to claim 1, wherein the outer diameter of the epidermis is contracted, and when the inside of the epidermis is opened to atmospheric pressure after insertion into the vagina, the epidermis returns to its original shape by the restoring force of the sponge rubber.
中心部に軸方向に沿って延びる体液通過孔をそれぞれ有
するとともに、表皮の子宮側端面は胎児の頭部に対応し
て皿状の凹面に形成されている請求項２記載の分娩進度
検出器。3. The outer skin has a plurality of protrusions on its outer peripheral surface.
3. The delivery progress detector according to claim 2, wherein the center portion has a body fluid passage hole extending along the axial direction, and the uterine side end surface of the epidermis is formed into a dish-shaped concave surface corresponding to the head of the fetus.
延びる金属部材からなり、上記圧縮変形量測定手段はコ
イルを有する発振回路からなり、該発振回路のコイル
は、その軸線上で上記素子とラップ可能でかつ該ラップ
量が上記検出体の伸縮部の圧縮変形に伴って変化するよ
うに配置されている請求項１記載の分娩進度検出器。4. The position detecting element is made of a metal member extending in the axial direction of the expandable portion, the compressive deformation amount measuring means is made of an oscillating circuit having a coil, and the coil of the oscillating circuit is arranged on the axis thereof. The delivery progress detector according to claim 1, which is arranged so that it can be wrapped with the element and that the amount of wrapping changes according to the compressive deformation of the expandable portion of the detection body.
面の軸心を挟んだ二箇所に両端がそれぞれ接続された金
属線からなる請求項１記載の分娩進度検出器。5. The delivery progress detector according to claim 1, wherein the antenna is made of a metal wire whose both ends are respectively connected to two positions sandwiching the axial center of the end face of the insertion holding portion of the detection body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29767596A JP3524701B2 (en) | 1996-10-18 | 1996-10-18 | Labor progress detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29767596A JP3524701B2 (en) | 1996-10-18 | 1996-10-18 | Labor progress detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10118048A JPH10118048A (en) | 1998-05-12 |
| JP3524701B2 true JP3524701B2 (en) | 2004-05-10 |
Family
ID=17849691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29767596A Expired - Fee Related JP3524701B2 (en) | 1996-10-18 | 1996-10-18 | Labor progress detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3524701B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0502546D0 (en) * | 2005-02-08 | 2005-03-16 | Varma Rajiv | Ellis disimpacter |
| US9017270B2 (en) * | 2011-03-21 | 2015-04-28 | Ob Technologies, Llc | Apparatus and method of detecting movement of objects within the abdominal and/or pelvic region |
| JP2017511214A (en) * | 2014-04-14 | 2017-04-20 | テル ハショマー メディカル リサーチ インフラストラクチャー アンド サーヴィシーズ リミテッド | Premature birth delay |
| CN109528276B (en) * | 2018-12-18 | 2021-03-19 | 莒县人民医院 | Gynaecology and obstetrics is with urgent practise midwifery intelligent device |
-
1996
- 1996-10-18 JP JP29767596A patent/JP3524701B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10118048A (en) | 1998-05-12 |
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